Universal power supply for arc welder

Details Universal power supply for arc welder Universal power supply for arc welder

1999-08-04

2000-07-18

Riley, Shawn

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

323208, H02M 112

Patent

active

060916125

ABSTRACT:
A single phase power supply for electric arc welders comprising: a full wave rectifier forming the input of said power supply; a valley fill power factor correcting circuit for controlling input current flow to the rectifier and creating an high crest factor intermediate voltage; a converter forming the output of the power supply for converting the intermediate voltage into a generally ripple free DC voltage; and, switching means in the converter for controlling the output voltage of the converter to a level in the general range of 20-100 volts for welding.

REFERENCES:
patent: 5117088 (1992-05-01), Stava
patent: 5235504 (1993-08-01), Sood
patent: 5517086 (1996-05-01), El-Hamamsy et al.
patent: 5991180 (1999-11-01), Vogel et al.
patent: 6002103 (1999-12-01), Thommes
"Fluorescent Ballast Design Using Passive P.F.C. and Crest Factor Control," by Peter N. Wood, pp. 1-10, AN-998 No Date, Publisher/Source, etc.

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